Built for all-day comfort, the lightweight F5 Koroyd is the latest iteration of Klim’s safety and ventilation advances. For heightened strength and safety, the F5’s full carbon-fiber shell incorporates Koroyd and MIPS, the company’s energy-absorbing and head-protection technologies. It’s designed to take in copious amounts of air at speed and vent heat at low speed and while stopped through 18 intakes and 8 exhaust vents. Other features include an enlarged eye port for maximum field of vision, anti-microbial and anti-bacterial materials, a Drylex moisture-wicking comfort liner, and easy on-off strap closures. Three shell and EPS sizes for best fit and comfort. $649.99. www.klim.com